8Connecting Telephones and Adjunct Systems
Complete the Telephone Installation Process
332 Installation and Upgrades for G700 and S8300
December 2003
Avaya MM711 Analog: analog trunks use the 507B or 110-SCP-9 sneak current protectors. Over-
voltage protection is normally provided by the local telephone company. Analog voice terminals
use one of the following types of combined over-voltage and sneak current protection:
Gas tube with heat coil: 4B1E-W
Solid state with heat coil: 4C1S
IROB: 146C (4-lines) or 146F (25-lines)
!
WARNING:
Only service-trained personnel are to install these circuit protection devices.